This toaster was manufactured in the 1990s in France. It has one lever and multiple heat settings.
Front and Back Panels
Inner Heating Panels
Side Panels
Tefal Thick N Thin Toaster 815032 Disassembly
These are some common tools used to work on this device. You might not need every tool for every procedure.
iFixit Opening Tool
Mako Driver Kit - 64 Precision Bits
TR9 Torx Security Screwdriver